Business Segment Data (Details Textual) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 02, 2019 USD ($)	Dec. 01, 2018 USD ($)	Sep. 01, 2018 USD ($)	Jun. 02, 2018 USD ($)	Mar. 03, 2018 USD ($)	Dec. 02, 2017 USD ($)	Sep. 02, 2017 USD ($)	Jun. 03, 2017 USD ($)	Mar. 02, 2019 USD ($) operating_segment	Mar. 03, 2018 USD ($)	Mar. 04, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments									4
Number of operating segments | operating_segment									6
Project related charges									$ 40,900
Revenues	$ 346,255	$ 357,718	$ 362,133	$ 336,531	$ 353,453	$ 356,506	$ 343,907	$ 272,307	1,402,637	$ 1,326,173	$ 1,114,533
Geographic Concentration Risk | Net export sales
Segment Reporting Information [Line Items]
Revenues									$ 56,300	$ 49,100	$ 76,200
Export net sales as a percentage of consolidated net sales (percentage)									4.00%	4.00%	7.00%